AI Article Synopsis
- Researchers found that mental stress can lead to serious health problems like heart attacks and depression.
- They proposed a new way to measure stress using two methods: EEG (which records brain waves) and fNIRS (which looks at blood flow in the brain).
- Their tests showed that combining these methods gives better results in figuring out if someone is stressed compared to using just one method.
Article Abstract
Previous studies reported mental stress as one of the major contributing factors leading to various diseases such as heart attack, depression and stroke. An accurate stress assessment method may thus be of importance to clinical intervention and disease prevention. We propose a joint independent component analysis (jICA) based approach to fuse simultaneous measurement of electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) on the prefrontal cortex (PFC) as a means of stress assessment. For the purpose of this study, stress was induced by using an established mental arithmetic task under time pressure with negative feedback. The induction of mental stress was confirmed by salivary alpha amylase test. Experiment results showed that the proposed fusion of EEG and fNIRS measurements improves the classification accuracy of mental stress by +3.4% compared to EEG alone and +11% compared to fNIRS alone. Similar improvements were also observed in sensitivity and specificity of proposed approach over unimodal EEG/fNIRS. Our study suggests that combination of EEG (frontal alpha rhythm) and fNIRS (concentration change of oxygenated hemoglobin) could be a potential means to assess mental stress objectively.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5102531 | PMC |
| http://dx.doi.org/10.1364/BOE.7.003882 | DOI Listing |
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